Bung and sealing means



June 2, 1931. l. H. RIEKE v 1,808,576

BUNG AND SEALING MEANS Filed March 51, 1930 J VMM INVENTOR.

' ATTORNEY- Patented lune 2, 1-931 UNITED STATES IRVIN H. RIEKE, OF AUBURN, INDIANA, ASSIGNOR TO RI PATENT OFFICE mm METQL 'rnonucrs com PORATION, A. CORI'OItA'IION OF 1NDIANA BUNG AND SEALING MEANS Application filed March 31, 1930; Serial No. 40,257.

seal applicable to the bung so constituted that after being applied to the bung, its removal therefrom, or removal of the bung from the container, cannot be accomplished without mutilating the seal;

Another object of the invention is to provide a bung and seal therefor so constructed that it may be applied to the bung instantly without recourse to tools or other equipment.

A preferred embodiment of the invention is shown in the accompanying drawings, in which Fig. 1 is a plan view of a bung fixture including a bung and seal applied thereto in which the invention is embodied, a portion of the seal being broken away;

Fig. 2 is an elevation projected from Fig. 1, portions being broken away;

Fig. 3 is a side elevation of a seal partly broken away showing a modified form of the invention, and p Fig. 4 is a similar view showing another modified form of the invention.

The illustrative embodiment of the invention comprises a cup-shaped bung 1 having an externally threaded cylindrical wall 2 and a radial flange '3 extending outwardly from its top providedwith a polygonal rim 4 that constitutes a wrench-head. The bung has a circular chamber 5 therein that is open at its top and which is accessible through said wrench-head. The bung is suited to beamplied to the bung fixture 6 of a container 7 in the usual manner so as to close theopening therein. The particular form of'the fixture is immaterial to the present invention inasmuch as the invention is applicable to many of the well known types of bung fixtures. As an example, the bung fixture 6 shown in the drawings is secured in place in the shell of the container 7, the flange 8 of said fixture being enveloped by and permanently secured in an embossment 9 formed in said shell.

The sealing means for the bung consists of a shell 10 made of fragile sheet metal and shaped so as to have a cup 11 with a hollow cowl 12 surrounding its upper end. The cup 11 is so proportioned as-to telesco ically fit into the circular chamber 5 in the filing, and the cowl is so proportioned relative to the wrench-headai of the bung that it overhangs said wrench-headwhen the seal is in place and the outer rim 13 of the cowl is annular and encompasses the outer rim of the wrenchhead without having normal contact there- .7

with. A portion of the outer face of the rim 13, adjacent the top of the cowl, is preferably knurled so that the'rim is susceptible to defacement when tampered with. The lower end .of the cup has formedin its center an embossment 15 that extends through an opening 16 made in an anchor-plate 17 and the extreme lower end of the embossment is of greater diameter than the opening 16 so that detachment of the anchor-plate from the cup is prevented. The anchor-plate is preferably triangular in form and presentsthree radially disposed jaws l8 equally spaced apart and which bear against the inner face of.v the cylindrical wall 2 of the bung whenthe cup of the seal is 1pushed into the chamber 5 thereof. The anc to the diameter of the chamber 5 in the bung so that the jaws ,18 drag upon the cylindrical wall of the bung when the seal is applied thereto and cause the anchor to become dished downwardly. The anchor 17 is preferably made of spring sheet metal so that when the anchor'is forced into operating position it becomes sprung into locking engagement f with the cylindrical wall. of the bung and thereby prevents withdrawal of the cup from the chamber.

In Fig. 3 is shown a seal of modified form in which the anchor 17 has an embossment 15' formed centrally therein that extends up through the bottom of the cup 11 of the shell 12', the top of the embossment being enlarged so as to overhang the adjacent wall of the cup and thereby prevent detachment of the shell from the anchor.

In each of the forms shown in Figs. 2 and 3 the shell may have turning movement relative to the anchor-plate upon the'axis of the embossment by which the are connected together without becoming de ached. M

or is proportioned with respect I loo In the form shown in Fig. 4 the anchor 17'. is secured centrally to the bottom of the cup '11" by spot weldingthe anchor to the cup as indicated by 19. -,Or, the anchor may be attached to the center of the cup'in any other suitable manner as maybe found convenient in manufacturing the seal.

In utilizing the'inv'ention, the container,

after having been filled with the goods to.

into the bung fixture and applying be shipped, is closed by screwing the bung tightening it 'by a wrench thereto. The seal is then applied to the bung'by forcefully inserting v the cup of the shell together with the anchor attached thereto into the chamber 5 of the bung.- When the cup and anchor are:

thus positioned, the Wrench-head of the either of which conditions indicate that 'unauthorized removal of the bung has been undertaken. In the event the cowl is com pressed against the wrench-head so as to permit the application of a tool for turning the bung, the knurled rim of the cowl becomes mutilated and extremely diflicult of repair to such an extent as would conceal the fact of such tampering. What I claim is :t 1. In a bung for a container and sealing means therefor, the combination of a cup shaped J bung having a wrench-head and a circular chamber opening through said wrench-head, and a sealing means compristached to ing a fragile shell having a cup shaped to fit telescopically in said chamber and provided with a cowl at its top for encasmg said wrench-head when the sealing means is applied to said bung,

the bottom of the shell cup having jaws that engage the wall of the bung cup and lock the sealing means in place.

p 2. In a device of the class described'the combination of a chambered bung having an opening through its headya fragile shell" having a hung head encasing part and a central cup portion shaped to fit into the chamber of said'bung, and a spring metal anchor securedto the bottom of said cup shaped portion having locking engagement i v with said bung within the chamber thereof to secure said shell in place.

3. A. bung having a head and a circular chamber therein openingthrough said head, and a sealing means comprising -a fragile shell having a portion adapted to telescopically fit into said chamber, and another conand 'ananchor attiguous portion adapted to encase said head, and being provided also with an'anchor attached to said first named portion adapted to have locking engagement with said bung withinthe chamber thereof. and secure said shell in place. I

4. In a device its head, and a sealing means includin a fragile shell bottom thereof by a destructible connection, and having locking relation with said hung in the chamber thereof, said shell being adapted to encase the headof the bung when the anchor is in locked connection with said bung.- l

5. In combination with a bung having a and an anchor attachedto t e.

df the class described,' al I, chambered bung having an opening through head and a chamber opening through said i I head, an anchor adapted to have locking engagement with said bung sorted into said chamber, and a fragile shell when forcibly in-- having a breakable connection,with said anchor and shaped so as to encase the head of the bung when thean'chor is'in operative position.

testimony whereof I aflix my signature.

' IRvIN .I-I. -RIEKE.- 

